Weak AC Airflow with Intermittent Odor
The AC system in your 2020 Toyota Tacoma has weak airflow that comes and goes, along with a bad smell. This suggests a blockage or restriction in the evaporator or cabin air filter, possibly with mold or debris buildup.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter restricting airflow and causing musty odors.
Mold or mildew on the evaporator coil due to moisture buildup, leading to bad smell and reduced airflow.
Blower motor resistor or fan speed controller failing, causing intermittent airflow.
Related OBD-II Codes
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What You Should Do
First, check and replace the cabin air filter (located behind the glove box).
If the smell persists, use an AC evaporator cleaner spray to kill mold.
If airflow is still weak, have the blower motor resistor and fan tested by a mechanic.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
